Commitments and Contingencies (Details 1) (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Discounted liabilities recorded in :
Accrued Expenses	$ 1.3	$ 1.1
Other Long-Term Liabilities	3.1	3.3
Total	4.4	4.4
Undiscounted liabilities	$ 4.7	$ 4.8
Maximum [Member]
Discounted liabilities recorded in :
Discount rate	4.70%	7.90%
Minimum [Member]
Discounted liabilities recorded in :
Discount rate	3.10%	1.30%